[Heimdal-source-changes] [heimdal/heimdal] 6dd3eb: CVE-2017-11103: Orpheus' Lyre KDC-REP service name...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/heimdal/heimdal
  Commit: 6dd3eb836bbb80a00ffced4ad57077a1cdf227ea
      https://github.com/heimdal/heimdal/commit/6dd3eb836bbb80a00ffced4ad57077a1cdf227ea
  Author: Jeffrey Altman <jaltman at secure-endpoints.com>
  Date:   2017-07-10 (Mon, 10 Jul 2017)

  Changed paths:
    M lib/krb5/ticket.c

  Log Message:
  -----------
  CVE-2017-11103: Orpheus' Lyre KDC-REP service name validation

In _krb5_extract_ticket() the KDC-REP service name must be obtained from
encrypted version stored in 'enc_part' instead of the unencrypted version
stored in 'ticket'.  Use of the unecrypted version provides an
opportunity for successful server impersonation and other attacks.

Identified by Jeffrey Altman, Viktor Duchovni and Nico Williams.

Change-Id: I45ef61e8a46e0f6588d64b5bd572a24c7432547c